Rope-machine.



R. A. DAVIS.

ROPE MACHINE. APPLIOATIORVI'ILBD um 14, 1907.

967,174, Patented Aug. 16, 1910.

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R. A, DAVIS.

ROPE MACHINE. APPLICATION PILB D MAY 14, 1907.

967,174. Patented Au 16, 1910.

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RAYMOND A. DAVIS, OF FARGO, NORTH DAKOTA.

ROPE-MACHINE.

Specification of Letters Patent. Application fi1ed May 14, 1907.

Patented Aug. 16, 1910.

Serial no. 373,653.

T 0 all whom it may concern:

Be it known that I, RAYMOND A. DAVIS, a citizen of the United States,residing at Fargo, in the county of Cass, State of North Dakota, haveinvented certain new and useful Improvements in Rope-Machines; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to new and useful improvements in machines fortwisting rope strands, and it has particular reference to a machine ofthat type which embodies a supporting frame and rotatable spindlesprovided with rope-engaging means.

In connection with a machine of the above type, the invention aims as aprimary object to provide a novel construction, combination, andarrangement of parts, details of which will appear in the course of thefollowing description, in which reference is had to the accompanyingdrawings forming a part of this specification, like characters ofreference designating similar parts throughout the several views,wherein Figure 1 is an elevation looking rearwardly at a machineconstructed in accordance with the present invention. Fig. 2 is a frontelevation thereof. Fig. 3 is a side elevation thereof. Fig. 4 is acentral longitudinal section showing the adjustable bearing of a drivingsprocket embodied in the invention. Fig. 5 is a detail sectional viewshowing the bearings for the shafts that carry the rope spindles.

Referring specifically to the accompanying drawings, the numeral 1designates a supporting frame provided with a body portion 2, and anangularly disposed horizontal base 3, having screw holes 1 therein, forthe reception of suitable fastening means to secure the frame to asupport. The body portion 2 at its upper end is of cruciform shape, andis provided with three arms 5, disposed at approximate right angles toone another. The arms 5 are each formed at their terminations withopenings 6, through which are received hollow stub shafts 7, and saidopenings may be provided with anti friction rollers constitutingjournals for said shafts. This embodiment of the invention isillustrated in Fig. 5, the anti'friction rollers being designated by thenumeral 8. The shafts 7 at their rear ends have sprockets 9 spliuedthereon, which are held from displacement by cotter pins 10 passingthrough the shafts 7. At their projecting front ends, the shafts 7 areprovided with rope spindles 11 comprising shanks 12 fixed to said shaft,and provided with inturned hook bills 13 pointing toward the angular end14, of said shanks. The body portion 2 is provided with a longitudinalslot 15, in which are supported on expansive coil springs 16, the latterresting on the lower edge of said slot, inter-connected bearing members17, for a horizontal shaft 18, the latter carrying at its rear end adriving sprocket 19, provided with a wrist pin or crank arm 20, topermit of the rotation thereof, manually or otherwise. Above the slot 15is a second slot 21, a web 22 thus being afforded between the slots 15and 21. Vertical adjusting screws 23 are threaded through the web 22,and bear with their lower ends against the uppermost of the bearingplates 17. The screws 23 are moved vertically in either direction bymeans of adjusting nuts 24, interposed between the lower wall of theslot 21 and between a narrow web 25, spanning said slot and havingopenings therein for the passage of the upper end of the screws 23therethrough. A sprocket chain 26 is trained over the several sprockets9 and the drive sprocket 19, the former being driven by the latter torotate the spindles 11 and twist the rope strand engaged therein andmove through the hooked portions thereof, as will be readily understood.

It will be apparent that the springs 16 will force the members 17 to thelimit of their movement upwardly, as controlled by the lower ends of thescrews 23, and that by adjusting said screws in the proper direction bymeans of the nuts 24, the members 17 and shaft 18 may be raised orlowered in the slot 15 to tighten or loosen the chain 26.

What is claimed is:

The herein described rope machine com-. prising a frame having avertical standard, said standard being provided with a plurality offixed bearings and also with a vertical guide slot, an intermediate slotabove said guide slot, and an upper slot above said intermediate slot,stub shafts mounted for rotation in said fixed bearings and eachprovided with a twisting hook at one end on one side of said standardand a sprocket wheel on the other end, on the opposite side of saidstandard, a bearing mounted for vertical movement in said guide slot, astub intermediate and upper slots, and adjusting shaft mounted in saidvertically movable nuts on said screws and disposed in said bearing, asprocket wheel and a crank on intermediate slots.

said stub shaft, an endless sprocket chain In testimony whereof, I afiixmy signa- 5 connecting the said sprocket wheels, a supture, in presenceof two witnesses.

porting spring in the lower portion of said guide slot and under saidvertically mov- RAYMOND DAVIS able bearing, adjusting screws on theupper Witnesses: side of said vertically movable bearing and J. W.JONES,

10 passing through the webs between the guide, M. N. LARSON.

